SpaceWire communication network fault recovery method and system

A communication network and fault recovery technology, applied in the field of communication, can solve the problems of network state change, inability to guarantee the correctness and reliability of network data transmission, and inability to update the network in time, so as to achieve the effect of enhancing reliability.

Active Publication Date: 2017-05-31
BEIJING MXTRONICS CORP +1
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Problems solved by technology

The aerospace environment is complex and harsh, and has high requirements for the reliability of the communication network. Due to the continuous reduction of the characteristic size of the device and the increase of the operating frequency, the probability of single-event multi-bit flipping in the SpaceWire circuit is greatly increased, and the sensitivity of the single-event transient is continuously enhanced. Therefore, the current application of SpaceWire bus communication technology still has the problem of insufficient fault tolerance to li

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  • SpaceWire communication network fault recovery method and system
  • SpaceWire communication network fault recovery method and system
  • SpaceWire communication network fault recovery method and system

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Embodiment Construction

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the public implementation manners of the present invention in detail with reference to the accompanying drawings.

[0044] refer to figure 1 , shows a flow chart of steps of a SpaceWire communication network failure recovery method in an embodiment of the present invention. In the present embodiment, the SpaceWire communication network failure recovery method includes:

[0045] Step 101, when it is detected that the primary communication link of a certain communication node in the SpaceWire communication network fails, activate the standby communication link of the certain communication node.

[0046] In this embodiment, the certain communication node is redundantly connected to two or more routers, corresponding to two or more communication links, one of which can be used as the main communication link, The rest of the communication li...

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Abstract

The invention discloses a SpaceWire communication network fault recovery method and system. The method comprises the steps of: when monitoring that a main communication link of a certain communication node in a SpaceWire communication network has a fault, activating a standby communication link of the certain communication node, wherein the certain communication node is redundantly connected with two or more routers; according to the link information of the standby communication link of the certain communication node, performing dynamic optimization reconstruction on the SpaceWire communication network to obtain a reconstructed route table; and configuring the reconstructed route table to a router to perform fault recovery on the SpaceWire communication network. The method and the system solve the fault recovery problem of a link disconnection error of the SpaceWire network under spatial radiation.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a SpaceWire communication network failure recovery method and system. Background technique [0002] The SpaceWire bus is a high-speed, point-to-point, full-duplex serial bus standard designed for aerospace missions. It has the characteristics of high transmission rate, low power consumption, upgradeability, and low cost. The highest communication rate can reach 400Mbps, and the topological structure is flexible. It plays an important role in solving the insufficient bus bandwidth of the current on-board data processing system, and has been more and more widely used in the aerospace industry. The aerospace environment is complex and harsh, and has high requirements for the reliability of the communication network. Due to the continuous reduction of the characteristic size of the device and the increase of the operating frequency, the probability of single-event m...

Claims

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Application Information

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IPC IPC(8): H04L12/703H04L12/707H04L12/717H04L12/721H04L29/08H04L45/28H04L45/24H04L45/42
CPCH04L45/12H04L45/22H04L45/28H04L45/42H04L67/12Y02D30/50
Inventor 杜瑞飞海东王兴友陈雷于立新彭和平庄伟邹萌
Owner BEIJING MXTRONICS CORP
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